Enhancement of natural enemies through habitat manipulation techniques in upland rice condition

Issue Date

10-2015

Abstract

Results revealed that plots planted with Vigna radiata L. and Zinnia peruviana intercropped or planted adjacent to rice varieties Dinorado and NSIC RC11 increased the population of natural enemies resulting in the reduction of insect pest population and damage particularly white stemborers, leaf folders, green leafhoppers, rice bugs and cutworms. Plots planted with Z. peruviana and V. radiata L. obtained higher yields in both test varieties as compared with the other treatments. This was attributed to higher number of panicles per sqm and higher percentage filled grains. Z. peruviana and V. radiate L. produced flowers that contained pollen and nectar responsible for increasing the activity of natural enemies such as predators and parasitoids thereby increasing their efficacy as biological control species against insect pests. These plants served as shelter for natural enemies from environmental hazards which are detrimental to their survival. Moreover, V. radiata L. and Z. peruviana served as efficient habitat which may promote foraging, resting and nesting of natural enemies in the upland rice environment.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

29

Issue

2

Page

229

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

VIGNA RADIATA; ZINNIA; UPLAND RICE; VARIETIES; SPECIES; PARASITOIDS; PREDATORS; NATURAL ENEMIES; INTERCROPPING; BIOLOGICAL CONTROL AGENTS

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